Antarctoscyphus spiralis ( Hickson & Gravely, 1907 )

Soto, Joan J. & Peña, Álvaro L., 2019, Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica), Zootaxa 4570 (1), pp. 1-78 : 33

Antarctoscyphus spiralis ( Hickson & Gravely, 1907)

( Fig. 10 h–j)

Material examined. ANT XV/3: 48-77, one colony, c. 45 mm high; 48-274, one colony, c. 75 mm high; 48-276, one colony, c. 25 mm high; 48-297, one colony, c. 20 mm high; ANT XXI/2: PS65/121, one colony, c. 80 mm high; PS65/132, one colony, c. 65 mm high; PS65/166, one colony, c. 10 mm high, on St. nonscripta ; PS65/253, three stems, c. 60, 70, 75 mm high; PS65/265, one colony, c. 65 mm high, and few stems, up to 20 mm high, on St. polarsterni ; PS65/274, one colony, c. 75 mm high; PS65/278, one colony, c. 30 mm high.

Ecology and distribution. Previously reported at depths from 6 ( Naumov & Stepanjants 1972, as Sertularella spiralis ) to 2143 m (Peña Cantero et al. 2017); our material comes from depths between 119 and 417 m. Species with a circum-Antarctic distribution ( Stepanjants 1979, as Sertularella spiralis ).

Figures

FIGURE 10. a Antarctoscyphus asymmetricus: hydrotheca. b–d A. elongatus: b colony; c–d hydrothecae. e–g A. grandis: e colony; f hydrotheca; g gonotheca. h–j A. spiralis: h colony; i–j hydrothecae. k Sertularella sp.: hydrotheca.